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Turbina pelton

César bertomeu

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Principio de funcionamiento

• Está formada por una rueda móvil provista de aletas o cucharas en su periferia sobre las cuales incide el chorro de agua a la presión atmosférica

Chorro sale de un inyector fijo en el cual la regulación se efectúa variando la posición de una aguja que obtura más o menos el orificio de salida. El chorro incide en la arista central de las cucharas y se divide en dos partes que salen despedidas lateralmente, para caer después al canal de fuga directamente por la fuerza de la gravedad (por tanto, no tienen difusores).

Para caudales mayores, pueden disponerse varias toberas en diversas posiciones del rodete

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rodete

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Energy Extraction: Pelton Turbine• These double cups

catch the water from the input water jets and redeflect it for maximum thrust to spin the rotor

• Pelton turbines are popular for microturbines producing remote home energy

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Small Harris hydro generator for home use

                                     

An automotive alternator is remanufactured to generate the required voltage at a low speed, as car alternators run at 5,000 to 18,000 rpm

A Pelton wheel turbine is spun by four nozzle flows

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Turbine Description• A small exciter generator is at the

top of the shaft and its energy drives the stator (stationary) coils of the large alternator

• The alternator (main generator of alternating current) is above the turbine on the same shaft

• The turbine at the bottom spins at a slow speed (~150 rpm) to move the rotor coils past the stator coils and generate at the desired frequency (60 Hz in the US; often 50 Hz overseas)

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A Typical Turbine Hall

• Tongland Turbine Hall, Kirkcudbright, Galloway

• The exciters are located atop the generators and drive the field coils of the generator

• Turbine areas are very noisy, requiring ear protection

030323 http://www.freefoto.com/pictures/industry/hydro_electric/index.asp?i=56

                                          

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